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浏览/检索结果: 共7条，第1-7条 帮助 限定条件 内容类型：会议论文     已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 Investigation on combined multiple shell-pass shell-and-tube heat exchanger with continuous helical baffles 会议论文 作者:  Yang, Jian-Feng;  Lin, Yuan-Sheng;  Ke, Han-Bing;  Zeng, Min;  Wang, Qiu-Wang 收藏  |  浏览/下载：6/0  |  提交时间：2019/12/02 Leakage flow  Combined serial two shell-pass  Continuous helical baffles  Shell-and-tube heat exchanger   Liquid sloshing in the horizontal circular tanks with complex baffles 会议论文 5th International Conference on Energy and Environmental Protection (ICEEP), Shenzhen, PEOPLES R CHINA, 2016-01-01 作者:  Liu, Jun;  Zhang, Pengchong 收藏  |  浏览/下载：2/0  |  提交时间：2019/12/09 Sloshing  Scaled boundary finite element method  Circular tanks  Baffles  Sloshing frequencies   2D Simulation of Effects of Position of Baffles on the Removal Rate of Solids in a Sedimentation Tank 会议论文 2nd International Conference on Civil Engineering and Transportation (ICCET 2012), Guilin, PEOPLES R CHINA, 2012-10-27 作者:  Liu, Y.L.;  Zhang, P.;  Wei, W.L. 收藏  |  浏览/下载：2/0  |  提交时间：2019/12/20 position of baffles  simulation  hydraulic characteristics  sedimentation tank   Study on ultra-light secondary baffle for coaxial two-mirror telescope (EI CONFERENCE) 会议论文 2012 9th IEEE International Conference on Mechatronics and Automation, ICMA 2012, August 5, 2012 - August 8, 2012, Chengdu, China Zhang L.; Jia X.; Xie P.; Xing L. 收藏  |  浏览/下载：47/0  |  提交时间：2013/03/25 The coaxial two-mirror telescope consists of two mirrors facing each other. Classical two-mirror arrangements are Gregorian and Cassegrain. These systems are usually applied to space telescopes and often have optical baffles to prevent stray light from entering the focal plane. The optical baffles consist of concentric rings suspended between the secondary and the primary mirror. The secondary baffle for a large two-mirror optical system is designed and analyzed in this paper. According to mission of a telescope  the structure should have high stiffness and high reliability and light weight. Compared with invar  aluminum alloy and titanium alloy  carbon fiber composite is currently the best material in terms of weight-to-strength ratio. It also has advantages of high temperature tolerance and low thermal expansion. So carbon fiber composite is chosen as material to meet requirements of the coaxial telescope. In this paper  optimization method based on finite element analysis (FEA) is used for design the secondary baffle. Minimum weight of the baffle is chosen as an objective function. Thicknesses of former tube and vanes are chosen as variables. Analysis results show that the designed secondary baffle has maximum diameter of 180mm  total length of 120mm and weighs 142g. And its fundamental frequency reaches 651Hz. Therefore the baffle has many advantages  such as ultra-light weight  high stiffness and dimensional stability  etc. The optimization method and the baffle design can be helpful to other coaxial telescopes  such as Cassegrain  Gregorian and their subdivisions. 2012 IEEE.   Numerical Study of Liquid Sloshing on Anti-sloshing Device Using Open Cell Metal Foams in Oil Tank 会议论文 作者:  Zhang, Y.;  Qu, Z. G.;  Tao, W. Q.;  Lu, T. J. 收藏  |  浏览/下载：4/0  |  提交时间：2019/12/18 Liquid sloshing  Metal Foam  Numerical simulation  Baffles   3-D NUMERICAL STUDY ON SHELL-SIDE COMPREHENSIVE PERFORMANCE OF SHELL-AND-TUBE HEAT EXCHANGER WITH COMBINED HELICAL BAFFLES 会议论文 作者:  Chen, Guidong;  Xu, Jing;  Zen, Ming;  Wang, Qiuwang 收藏  |  浏览/下载：1/0  |  提交时间：2019/12/18 helical baffles  shell-and-tube heat exchangers  segmental baffles  comprehensive performance   EXPERIMENTAL AND NUMERICAL STUDIES OF SHELL-AND-TUBE HEAT EXCHANGERS WITH HELICAL BAFFLES 会议论文 作者:  Chen, Guidong;  Wang, Qiuwang 收藏  |  浏览/下载：3/0  |  提交时间：2019/12/18 combined helical baffles  shell-and-tube heat exchangers  discontinuous helical baffles  continuous helical baffles